Stock Photo - Bucharest, Romania - March 28, 2012: Facebook logo is displayed on a mobile phone screen. Facebook is a social networking service launched in February 2004, having more than 845 million active users.

Bucharest, Romania - March 28, 2012: Facebook logo is displayed on a mobile phone screen. Facebook is a social networking service launched in February 2004, having more than 845 million active users.

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